Paper-making machine.



No. 696,595. Patented Ann I, I902.

J. H. REYNOLDS.

PAPER MAKING MACHINE.

(Application filed Jan. 17, 1901..

(No Model.)

m: Nomus wc'rzns co. movourna, WASHINGYON, u. c.

UNTTnn STATES PATENT Unmet,

JAMES H. REYNOLDS, OF MITTINEAGUE, MASSACHUSETTS, ASSIGNOR TO GEORGE J. ODOHERTY AND IVALTER VANDENBURGH, ()F BOSTON,

MASSACHUSETTS.

PAPER MAKING MACHINE.

SPECIFICATION forming part of Letters Patent No. 696,595, dated April 1, 1902. Application filed January 17, 1901.. Serial No. 43,633. (No model.)

To all. whom. itwtay concern.-

Be it known that I, J AMEs I-I. REYNOLDS, a citizen :of the United States of America, residing in Mittineague, in the county of Hampden and State of Massachusetts, (whose post-office addresslis Mittineague, Massachusetts,) have invented new and useful Improvements in- Paper-Making Machines, of which the following is a" specification, reference being had to the accompanying drawing and letters of reference marked thereon.

My inventionrelates especially to a construction of machine wherein pressure upon the pulpor paper while on the Fourdrinier wire is avoided. I

In the machines nowin use-the pressure upon-the partly-formed paper while it is on the Fourdrinier results in placing a watermark impression or mark of the Fourdrinier wire upon Ihepaper, thus renderingit unfit for many uses and especially renders it unfit for use for photographic purposes. I

The object of my invention is therefore to: provide a construction of machine wherein this injuriouspressure is entirelyavoided, wherein all water-marks, wire-marks, on impressionsofwire-onthe paper are avoided, and generally to provide a construction wherein. the paper produced upon said machine will have a smooth clear uniform surface, free from the objectionable feature referred to.

Iaccom'plishthe object of my invention by the construction herein shown.

In the accompanying drawing, in which like letters of referenceindicate like parts, I show a portion. of an ordinary Fou-rdrinier machine with my improvement appliedthereto, it being a side elevation and showing only a portion of an ordinary Fonrdrinier machine back of a'point adjacent 'to the location of the suction-box.

Generally a indicates the frame of the machine; b, the ordinary lower roll; c,the Fourdrinier wire; (Z, a roll over which the Fourdrinier wire passes on its return, and e andf press-rolls.

In the construction of my machine I eliminate all pressure upon the pulp or semiplastic material forming the sheet until. the same the passage ofJthe Fourdrinier wire and to 'give it the desired rigidity. The same result may of course be accomplished by the en1-. ployment of idlers or stretcher-rolls suitably adjusted, and the location of the roll at may be changed, provided it is not so located as to bear against the pulp or sheet of paper.

shown in the drawing, the paper passes from the Fourdrinier wire upon the felt beltj and is carried under the roll 6, the latter be ing covered with felt or other suitable soft .material', and from this point it may beconveyed away and treated in theordinarymam ner, provided, of course, pressure is not thereafter applied in such a way as to bring about the objectionable results referred to. I prefer-that the roll 61 be mounted at each end in a box, which is supported by aninclined part 7t, so that if any unusual obstruction is carried along by the Fourdrinier wire damage to .thewire will be avoided by a slight movement of the boxes supportingtheroll (1 up the'inclines, and it will be seen that after the passage of the obstruction the roll 01 will return to its normal position by gravity. .It will of course be seen, however, that various devices and forms of construction may be employed whereby the roll d may be adjustably mounted to bear toward the roll l) and au tomaticallyretreat therefrom in the event of necessity, and thus avoid the breaking of or injury to the Fourdrinier wire, thus accomplishing the same result attained by the. particular form of construction herein illustrated, and it will also be seenthat varioiis changes may be made without departing from the spirit of my invention, and I do not limit myself to the exact form of construction herein shown and described.

llereto'foro the couching of the paper has been accomplished by subjecting the paper to the pressure of the coucher before it left the Fourdrinier, resultingin marking the paper with the wire-marks of the Fourdrinier. This is objectionable, and to avoid this feature I provide means of pressing the paper after leaving the Fourdrinier, and the mechanism by which I prefer to accomplish this result comprises a press-roll f, having an endless felt apron j arranged to pass over it and carry the paper, while above the roll fI arrange a press-roll 6, having its periphery covered with felt, so that the paper passes between two felt surfaces and all objectionable marking of the paper is avoided. It will of course be seen that two felt-covered rolls may be employed and an independent carrier be arranged to convey the paper from the Fourdrinier to the press-rolls. I prefer, however, to employ the endless felt apron j and the press-rolls arranged as shown in the drawing.

To prevent danger of the paper being wound upon the top press-roll g, I provide an uncovered roll 70, mounted in armsl and resting upon the surface of the roll e, so that if the paper accidentally adheres to the surface of the roll 6 and is carried upwardly it will be caught by the roll 75, and as this roll is not covered the paper will stickto it more closely than to the felt surface of the roll 6, and thus be carried upwardly and removed from the surface of the roll 7:; by the doctorm, and thus all danger of destroying the felt on the roll e and the endless felt belt by the accidental bunching or accumulations of pulp or paper between them will be avoided.

To enable me to vary the pressure between the press-rolls eandf, I support the frame in which the top roll is mounted on pivots, so that the top roll may be moved toward and from the lower roll, and weights or levers may be employed to provide superior pressure, if desired.

Having therefore described my invention, whatIclaim, and desire to secure by Letters Patent, is-- 1. In a paper-making machine, the combination of a suitable frame, a single couchroll, aFourdrinier wire passing over said roll, and means located immediately adjacent to said roll and beneath the lower reach of the wire, to maintain said wire under requisite tension and cause it to travel with the desired uniformity without the application of pressure upon it at a point where pulp or paper is carried.

2. The combination, in apaper-making machine, of a suitable frame, a Fourdrinier wire, and means to maintain said wire taut and cause it to travel without its being engaged by a roll arranged so as to subject the pulp or paper to pressure, said means consisting of a single couch-roll and a tension-roll immediately adjacent thereto and beneath the lower reach of the wire.

The combination, in a paper-making machine, of a suitable frame, a single couch-roll, a tension or driving roll immediately adjacent to said couch-roll, and a Fourdrinier wire passing between said rolls on its return travel after going over the couch-roll, and means to adjust said tension or driving roll against said wire and toward said couch-roll.

4. The combination,in a paper-making machine, of a suitable frame, a Fourdrinier wire, a couch-roll l), and a roll adj ustably mounted on inclined members to bear against the roll I) and support the Fourdrinier wire therebetween after the paper has been discharged from the Fourdrinier wire, substantially as shown.

5. The combination, in a paper-making machine, of a suitable frame, a Fourdrinier wire, a couch-roll, and an automatically-adjustable roll (Z arranged on inclined members to support the Fourdrinier wire and maintain it taut, said wire being pressed between said rolls after the paper has been discharged from the wire, substantially as shown.

6. The combination, in a paper-making machine, of a suitable frame, aFourdrinier wire, a couch-roll b, and a roll cl in boxes on in-. clined supports h, whereby said roll d constantly gravitates against said roll I) with the wire between, below the couching-point, substantially as shown.

7. The combination, inapaper-makingmachine, of a suitable frame, a single couch-roll, a tension-roll immediately adjacent to said couch-roll, a Fourdrinier wire passing over the couch-roll and between the couch and tension rolls, wherebysaid wire is maintained taut and tensioned against the couch-roll below the couching-point, a felt belt, a supporting-roll g for said belt, and press-rolls e and fback of the couching-point, substantially as shown.

8. The combination, in a paper-making machine, of a Fourdrinier wire, an endless felt belt arranged to receive the pulp or paper after it leaves the wire, a press-roll f under said belt, a felt-covered press-roll 6 above said roll f, a roll 7:, bearing against said roll 6, and a doctor for said roll l6 substantially as shown.

9. The combination, in a paper-making machine, of a Fourdrinier wire, press-rolls one of which is covered with felt, a roll 76 revolving against the surface of the felt-covered roll, and a doctor bearing against the surface of said roll 7c, substantially as shown.

JAMES H. REYNOLDS.

\Vitnesses:

S. SWEENEY, JAcoB SACKETT. 

